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upgrade to cells; cells were not sorted by lower[0], now yes

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This commit is contained in:
Vasco C. B. Ferreira
2026-07-08 12:07:51 +02:00
parent cc7cf49a55
commit 6f26a6357c
1 changed files with 19 additions and 10 deletions
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nufi/cells.h
+19 -10
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@@ -15,8 +15,8 @@ template <int dim> struct CellInfo {
typename DoFHandler<dim>::active_cell_iterator cell;
// usefull for locator
Point<dim> lower;
// Point<dim> upper;
// double h;
Point<dim> upper;
double h;
};
template <int dim> class CellLocator {
@@ -44,11 +44,20 @@ void CellLocator<dim>::rebuild(const DoFHandler<dim> &dof_handler,
info.cell = cell;
info.lower = cell->vertex(0);
// info.upper = cell->vertex(GeometryInfo<dim>::vertices_per_cell - 1);
// info.h = info.upper[0] - info.lower[0];
info.upper = cell->vertex(GeometryInfo<dim>::vertices_per_cell - 1);
if (info.lower[0] > info.upper[0])
std::swap(info.lower, info.upper);
info.h = info.upper[0] - info.lower[0];
cells.push_back(info);
}
std::sort(cells.begin(), cells.end(),
[](const CellInfo<dim> &a, const CellInfo<dim> &b) {
return a.lower[0] < b.lower[0];
});
}
template <int dim>
@@ -62,20 +71,20 @@ CellLocator<dim>::locate(const Point<dim> &p) const {
const double x = p[0];
// const double x_min = cells.front().lower[0];
// const double x_max = cells.back().uppper[0];
// const double L = x_max - x_min;
// binary search loop
auto it = std::upper_bound(cells.begin(), cells.end(), x,
[](double value, const CellInfo<dim> &cell) {
return value < cell.lower[0];
});
}); // returns cell to the right of cell with x
if (it == cells.begin())
it = cells.begin();
else
--it;
// Safety check: make sure the point is really inside this cell
AssertThrow(x >= it->lower[0] - 1e-12 && x <= it->upper[0] + 1e-12,
ExcMessage("CellLocator failed to find containing cell."));
return it->cell;
}